Rules abound undersea – as does death. If the water temperature is too warm, corals bleach, starve and die. And if the tube worms that thrive near deep sea hydrothermal vents venture too far from the fissure, they’ll freeze. But most of the time, they’re doing just fine, thank you, feasting on the poisonous spewing gases they’re so fond of. Watch this brief video on corallivory (the eating of live coral by fish!) to get you started. And then click here (12 minutes) to listen to the audio interview, for the details.